IPv4 AS & ASN Directory
| IP Range | CIDR | ASN | AS Name | |
|---|---|---|---|---|
| 12.18.80.0 to 12.18.95.255 | 12.18.80.0/20 | AS7018 | AT&T Services Inc. | See Range |
| 12.18.96.0 to 12.18.99.255 | 12.18.96.0/22 | AS17064 | TISD Inc. | See Range |
| 12.18.100.0 to 12.18.103.255 | 12.18.100.0/22 | AS7018 | AT&T Services Inc. | See Range |
| 12.18.104.0 to 12.18.105.255 | 12.18.104.0/23 | AS7018 | AT&T Services Inc. | See Range |
| 12.18.106.0 to 12.18.106.255 | 12.18.106.0/24 | AS399314 | Tufts Associated Health Plans Inc. | See Range |
| 12.18.107.0 to 12.18.107.255 | 12.18.107.0/24 | AS7018 | AT&T Services Inc. | See Range |
| 12.18.108.0 to 12.18.111.255 | 12.18.108.0/22 | AS7018 | AT&T Services Inc. | See Range |
| 12.18.112.0 to 12.18.127.255 | 12.18.112.0/20 | AS7018 | AT&T Services Inc. | See Range |
| 12.18.128.0 to 12.18.159.255 | 12.18.128.0/19 | AS7018 | AT&T Services Inc. | See Range |
| 12.18.160.0 to 12.18.175.255 | 12.18.160.0/20 | AS7018 | AT&T Services Inc. | See Range |
| 12.18.176.0 to 12.18.183.255 | 12.18.176.0/21 | AS7018 | AT&T Services Inc. | See Range |
| 12.18.184.0 to 12.18.185.255 | 12.18.184.0/23 | AS7018 | AT&T Services Inc. | See Range |
| 12.18.186.0 to 12.18.186.255 | 12.18.186.0/24 | AS7018 | AT&T Services Inc. | See Range |
| 12.18.187.0 to 12.18.187.255 | 12.18.187.0/24 | AS4917 | Amdocs Inc. | See Range |
| 12.18.188.0 to 12.18.191.255 | 12.18.188.0/22 | AS7018 | AT&T Services Inc. | See Range |
| 12.18.192.0 to 12.18.223.255 | 12.18.192.0/19 | AS7018 | AT&T Services Inc. | See Range |
| 12.18.224.0 to 12.18.239.255 | 12.18.224.0/20 | AS7018 | AT&T Services Inc. | See Range |
| 12.18.240.0 to 12.18.243.255 | 12.18.240.0/22 | AS7018 | AT&T Services Inc. | See Range |
| 12.18.244.0 to 12.18.244.255 | 12.18.244.0/24 | AS20265 | FE MORAN SECURITY SOLUTIONS | See Range |
| 12.18.245.0 to 12.18.245.255 | 12.18.245.0/24 | AS7018 | AT&T Services Inc. | See Range |
| 12.18.246.0 to 12.18.247.255 | 12.18.246.0/23 | AS7018 | AT&T Services Inc. | See Range |
| 12.18.248.0 to 12.18.255.255 | 12.18.248.0/21 | AS7018 | AT&T Services Inc. | See Range |
| 12.19.0.0 to 12.19.31.255 | 12.19.0.0/19 | AS7018 | AT&T Services Inc. | See Range |
| 12.19.32.0 to 12.19.39.255 | 12.19.32.0/21 | AS7018 | AT&T Services Inc. | See Range |
| 12.19.40.0 to 12.19.43.255 | 12.19.40.0/22 | AS7018 | AT&T Services Inc. | See Range |
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